Armless ergonomic chair



FIG. 1 is a front isometric view of the armless ergonomic chair showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view the thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for an armless ergonomic chair, as shown. 